Roller-support for balanced valves



(No Model.) r

-W .-T. REASER.

RCLLERJXSQUPPORTZFOR BALANCED VALVES. v No. 550,691. Patented Dec. s,1895.

II %E JW Wil'gcsscs Warren/13R cast/r.

llNTTEo STATES PATENT ()EETcE.

WARREN r. REAsER, oE LINcoLN, NEBRASKA.

ROLLER-SUPPORT FOR BALANCED VALVES.

SPECIFICATION forming part of Letters Patent No. 550,691, dated Decembera, 1895. Application filed November 30, 1894, Serial No. 530,451. (Nomodel.)

To all whom itmay concern:

Be it known that I, WARREN T. REAsER, a citizen of the United States,residing at Lincoln, in the county of Lancaster and State of Nebraska,have invented a new and useful Rolling Support for Balanced Valves, ofwhich the following is a specification.

This invention relates to rolling supports for balanced slide-valves;and it has for its object to effect certain improvements in rollingsupports of that character as set forth in my former patent, No.404,363.

To this end the main and primary object of the present invention is toprovide for lightening the construction of rolling supports for balancedslide-valves, while at the same time making the same sufliciently strongand durable to provide for sustaining the weight of the slide-valve andwithstanding the pressure exerted thereagainst, and also for effectuallywithstanding the hard and excessive wear to which the bearing-surfacesof such supports are subjected, particularly in locomotiveengines.

With these and other objects in view, which will readily appear as thenature of the invention is better understood, the same consists in thenovel construction, combination,

and arrangement of parts hereinafter more fully described, illustrated,and claimed.

In the drawings, Figure 1 is an end View of a slide-valve and its seat,showing the valve supported for movement on rolling supports constructedin accordance with this invention. Fig. 2 is a detail in perspective ofa rolling valve-support constructed in accordance with this invention.Fig. 3 is a central vertical sectional view thereof. Fig. 4 is across-sectional view on the line a; a: of Fig. 3.

Referring to the accompanying drawings, 1 designates an ordinaryvalve-seat of a locomotive, marine, or other engine,and arranged toslide on the valve-seatis the ordinary slidevalve 2, that is providedwith a carrier-cap 3, on the opposite ends of which,beyond the ends ofthe valve, are fitted the rack-plates 4, that are located directly aboveoppositely ar ranged rack-plates 5, that are fitted on the valveseat atthe ends of the valves. The

rack-plates 4 and 5 are provided at one edge with teeth 6 and areadapted to have arranged therebetween the rolling supports 7, that rollon the plain surfaces of the rack-plates and engage with the teeththereof to provide for supporting the valve to ease the same from itsseat in the same manner as contemplated by the supports, as set forth inmy former patent referred to.

In the present invention each of the rolling supports '7 consists of ahollow casting provided with opposite parallel side plates 8 andsegmental bearing ends 9, which connect the opposite ends of the sideplates 8 and which have a common center, so that the same will evenlyroll 011 the plain surfaces of the rackplates 4 and 5. The hollowcasting forming the rolling support is further provided at the oppositeends of one of its side plates 8 and at one side edge of the segmentalbearing ends 9 withintegral toothed segments 10, the teeth of whichproject beyond the exterior bearing-surfaces of the ends 9 and areadapted to mesh with the teeth of the rack-plates 4 and 5 at one edgethereof. The properstrength and bracing are given to the opposite sidesand ends of the hollow support 7 by further providing the castingforming the support with a central longitudinal integral brace-web 11,the ends of which are connected to the inner sides of the segmentalbearing ends 9. A central transverse brace 12 is also formed integrallywith the central brace-web 11 and the opposite side plates 8 andintersects the said central brace-web at right angles thereto tocomplete an interior bracing for the hollow support, which renders thesame amply strong for the work required thereof, while at the same timecompleting as light a construction of rolling support as it is possibleto make, thereby assisting to reduce the weight that must be carried bythe valve-operating de vices in operating the slide-valve.

In order that the herein-described hollow construction of rollingsupport may be rendered entirely practicable forlocomotive and similarwork, the exterior bearing-surfaces of the segmental bearing ends 9 areadapted to be hardened by any suitable method to such a degree ofhardness as will render the said surfaces capable of withstanding thehard and excessive wear placed thereon. l

The many advantages of the herein 7 described construction of rollingsupport for balanced slide-valves will readily suggest themselves tothose skilled in the art, and it Will be understood that changes in theform, proportion, and the minor details of construction may be resortedto without departing from the principle or sacrificing any of theadvantages of this invention.

Having thus described the invention, What is claimed, and desired to besecured by Letters Patent, is

A rolling support for balanced slide valves consisting of a singlehollow casting having opposite parallel side plates, integral segmentalbearing ends connecting the ends of the side plates, toothed segmentsformed integrally at the ends of one of said side plates at one sideedge of the bearing ends, an interior central longitudinal brace Webintegrally connecting said bearing ends, and an integral centraltransverse brace connecting the opposite side plates at their centersand integrally intersecting said brace Web at right angles thereto,substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two Witnesses.

WARREN T. REASER. Witnesses J OHN I-I. SIGGERS, G. O. SHOEMAKER.

